mei: bus: use simple sprintf for sysfs

Replace scnprintf with simple sprintf for sysfs files.
it is implicitly known that the buffer is big enough
for the variables to fit in.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191126123002.4835-1-tomas.winkler@intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>